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Received February 11, 2019
Accepted April 10, 2019
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해수 농축수 내 금속 이온 농도에 따른 이산화탄소 전환 생성물의 특성연구
Characteristic of Precipitated Metal Carbonate for Carbon Dioxide Conversion Using Various Concentrations of Simulated Seawater Solution
연세대학교 화공생명공학과, 03722 서울특별시 서대문구 연세로 50 1㈜우주엔비텍 기술연구실, 07217 서울특별시 영등포구 당산로 41길 11
Department of Chemical and Biomolecular Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea 1Wooju Envitech, Inc. R&D Center, 11, Dangsan-ro 41-gil, Yeongdeungpo-gu, Seoul, 07217, Korea
Korean Chemical Engineering Research, August 2019, 57(4), 539-546(8), 10.9713/kcer.2019.57.4.539 Epub 2 August 2019
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Abstract
지구온난화가 국제 문제로 언급되면서 온실가스 저감에 관한 연구가 꾸준히 진행되고 있다. 지구온난화의 가속화를 막기 위해 지구온난화의 주된 원인으로 언급되는 이산화탄소 저감에 관한 기술 개발의 중요성이 증가하게 되었고 이로 인해 이산화탄소 포집, 저장 및 재이용기술(CCUS, Carbon Capture, Utilization and Storage)의 발전을 요구하고 있다. 다양한 이산화탄소 포집, 저장 및 재이용기술 중에서 광물탄산화 기술의 경우에는 적은 에너지를 통해 많은 이산화탄소를 고부가가치 물질로 전환할 수 있다. 기존 연구에서는 고형 폐기물에서 이온을 용출해 사용해왔으며 이는 처리 과정이 복잡하다. 하지만 해수를 사용하게 되면 고농도의 금속 양이온이 해수 속에 용해되어 있어 고형 폐기물을 이용할 때보다 공정이 단순하다. 이 연구는 해수담수화 농축수를 금속양이온공급원으로써 사용하기 위한 기초연구로, 3M 모노에탄올아민(Monoethanolamine, MEA)을 흡수제로 사용하여 이산화탄소를 우선적으로 포집하였다. 또한 해수농축수를 모사하기 위해, 해수모사파우더를 사용하여 다양한 농도의 해수농축수를 제조하였다. 해수농축수와 포집된 이산화탄소 용액을 반응시켜 탄산염을 생성하였으며 이를 XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy), TGA (Thermalgravimetric Analysis)를 통해 탄산염의 생성 경향 및 흡수제의 재이용 가능성을 파악하였다.
Global warming has mentioned as one of the international problems and these researches have conducted. Carbon Capture, Utilization and Storage (CCUS) technology has improved due to increasing importance of reducing emission of carbon dioxide. Among of various CCUS technologies, mineral carbonation can converted CO2 into high-cost materials with low energy. Existing researches has been used ions extracted solid wastes for mineral carbonation but the procedure is complicated. However, the procedure using seawater is simple because it contained high concentration of metal cation. This research is a basic study using seawater-based wastewater for mineral carbonation. 3 M Monoethanolamine (MEA) was used as CO2 absorbent. Making various concentrations of seawater solution, simulated seawater powder was used. Precipitated metal carbonate salts were produced by mixing seawater solutions and rich-CO2 absorbent solution. They were analyzed by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Thermogravimetric Analysis (TGA) and studied characteristic of producing precipitated metal carbonate and possibility of reusing absorbent.
Keywords
References
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Mazzotti M, Pini R, Storti G, J. Supercrit. Fluids, 47(3), 619 (2009)
Chen J, Duan LB, Donat F, Muller CR, Anthony EJ, Fan MH, Chem. Eng. J., 351, 1038 (2018)
Lee S, Kim JW, Chan S, Bang JH, Lee SW, J. of CO2 Utilization, 16, 336 (2016)
Park SY, Seo JS, Kim TY, J. Environ. Impact Assess, 27(1), 17 (2018)
Kang DW, Lee MG, Jo HY, Park JW, Chem. Eng. J., 286, 1270 (2016)
Kim I, Svendsen HF, Ind. Eng. Chem. Res., 46(17), 5803 (2007)
David TW, David W, Sedimentology, 52(5), 987 (2005)
Dash S, Kamruddin M, Ajikumar K, Tyagi AK, Raj B, Thermochimi. Acta, 363(1-2), 129 (2000)
Loste E, Wilson RM, Seshadri R, Meldrum FC, J. Cryst. Growth, 254(1-2), 206 (2003)
De Chouden-Sa NV, Gonzalez LA, J. Sediment. Res., 79(6), 363 (2009)
Mcintosh RM, Sharp JH, Wilburn FW, Thermochimi. Acta, 165(2), 281 (1990)
Rodirguez-Blanco J, Shaw S, Bots P, Roncal-Herrero T, Benning LG, Geochim. Cosmochim. Acta, 127, 204 (2014)
Basfar AA, Bad HJ, J. Fire Sci., 28(2), 161 (2010)
Marion GM, Geochim. Cosmochim. Acta, 65(12), 1883 (2001)
Davies PJ, Bubela B, Chem. Geol., 12(4), 289 (1973)
Hollingbery LA, Hull TR, Thermochim. Acta, 509(1-2), 1-11(2010).
Chaiwang P, Chalermsinsuwan B, Piumsomboon P, Chem. Eng. Commun., 203(5), 581 (2016)
